Learn more about lasers

The word itself means “amplification of light using stimulated radiation” (L.Ok A.amplification by Sinduced tomission R.A diation that explains the working principle of lasers in technical terms. To be more precise, although modern lasers do not amplify light, they do oscillate to arrange the waves within the beam into a smooth, clear pattern.

This is the heart of the laser Materials that give off extra energy when passing through parts of the electromagnetic spectrum. This gain is called “gain factor” and can effectively increase the power of light.

Behind this amplification is a process called stimulated emission. Atoms in the material receive a burst of energy (for example, a strong electric current) that puts their electrons into an excited state. Light shining or reflecting across this excited material causes electrons to absorb and then emit photons of their own.

In some lasers, this medium is not a material composed of atoms, but merely a group of electrons moving at lightning speed.

By being trapped in a space that reflects light, the amplifier technically increases the amount of light passing through it. This is the fundamental basis of light amplification by forced radiation.

Although amplification is an important part of the process, the feature that makes this type of laser the laser we use to entertain cats, play DVDs, or shoot down drones is something called coherence. The light passing through the gain medium has the same color. Absolutely the same. Same wavelength, same direction, same polarization. Only in larger, concentrated amounts.

We filter the beam by sending waves back and forth across the optical gap, thus obtaining in-phase waves at the output. Each photon in this beam not only has the same properties, but also oscillates in time with the others.

What is the most powerful laser ever created?

The most powerful laser created today is located at the European Extreme Light Infrastructure facility in Romania. Their lasers are among the most intense in the world, producing incredibly short pulses of photons, protons, neutrons and neutrinos with incredible energy.

The high-power laser system uses a titanium-doped sapphire amplifier designed to generate laser pulses Power up to 10 petawatts.

To understand how much this is:

• One watt is one joule of energy per second.
• It takes just over 4,000 joules of energy to heat one liter of water by one degree Celsius.
• One petawatt is one quadrillion (1015) joules per second.

Although the pulse ends in 22 femtoseconds (22×10^-15 seconds), but that’s still a decent amount of energy squeezed into a tiny moment.

But the record may not last long. China’s “Extreme Light Station” could beat it in the coming years thanks to cutting-edge technology capable of producing 100 petawatt lasers; it is a burst of energy so intense it can shake free space and cause a shower of particles; This is a physical event. I’ve never seen before. I saw